Electbic range



F. F. FORSHEE.

ELECTRIC RANGE.

APPUCAYION mil) SEPT 25, 1919.

1,374,558. Patented Apr. 12, 1921.

WITNESSES INVENTOR av r ATTO'RNEY i of the damaged parts.

' UNITED STATES PATENT OFFICE.

FRANK F. FORSHEE, OF

PRODUCTS QOIBIPAIWI', A CORPORATION OF MICHIGAN.

madame RANGE.

T0 (1U whom, it. may concern:

' Be it known that l, FRANK l. .Fonsnns, a citizen of the United States, and a resident. of Flint, in the county of Ge iesee and State of Michigan, have invented a new and useful Improvement in Electric Ranges, of which the followin is a specification.

My invention rc ates to electrically-healed. apparatus and particularly to electric ranges and ovens.

()no object of my invention is to so arrange the wiring of a thermostat mounted in an oven door that there shall be no exposed comluctors or conduit.

Another object of my invention is to so provide a terminal structure for the oven door of an electrical range having a thermostat mounted therein that connection may be made with the electrical-circuit conductors by placing the door in its operative position.

Another object oi my invention is to provide a unit type of oven door for an electrical range which may be assembled without reference to the other parts of the oven or range with which it is to be associated.

Heretofore, a thermostat, mounted in the door of an electrical oven, has been connected to the electric circuit by means oi? conductors placed in a flexible armored conduit, the conduit emerging from the OVL. struc ture practicallyparallel to its front surface and entering the door at its hinged side. The conduit is therefore, subjected to a slight lateral twist every time the door is opened or closed. It was also necessary'to mount the door in place very early in the process of assembly of the oven, as it was necessary to have the conduit in place in the oven before the heat-insulating material was packed around the oven. chamber proper. There was, therefore, always the risk of injury to the thermostat mounted on the door or even to the door itselfywith a. resulting necessity of disassembling. the various parts, andthe repair or replacement In practising my invention, provide the usual electric-oven door with hollow hinge pins and mount the-rein insulated contact terminals that project slightly beyond the outer ends of the hinge pins. Ordinary insulated conductors, placed between the donblc walls of the door, connect these contact terminals with a. thermostat mounted in the door. Stationary contact members are so Specification of Letters Patent.

Patented Apr. 12, 1921.

Application filed September 25, 1919. Serial No. 326,305.

mounted in the oven shucture as to cooperate with the contact terminals mounted in the hinge pins to complete an electric circuit controlled by the operation of a thermostat. Hinge cover plates, which not also as hinge sockets, cooperate with the hinges to hold the door to cover the cooperating contact members, thus giving a neat and finished appearance to theovcn structure.

in thosinglc sheet of drawings, Figure 1 is a front view of an electric 'ange-in which is im-m-poratml the device en'ibod ving. my invention. Fig. 2 is a front view of a part of the oven, with a part of the cover member cut away, showing an assembled device vmhodvine' my invention. Fig. 3 is a side view of the cover member. Fig. 4.- is a sec tional view of the insulated stationary contact terminal, and Fig. 5 is a side view thereof.

An electric range. 1 is provided with an oven 2 having a door 3 which is arranged to swingontwardly and downwardly on hing-cs 4-. The hinges 4. are of L-shape, welrl ed to the corners of the door and have hollow extensions 5 which act as hinge pins. An insulated contact terminal 6, having a projecting head 7, is n'iounted in each hollow hinge pin 5, being insulated therefrom by means of a tube 8 and a washer 9 of suitable insulating material. One end of an insulated conductor 10 is inserted and soldered in an opening 11 in the contact terminal 6. the other end of the conductor 10 being connected to one contact terminal 0 a thermostat '12 mounted in the front of the door 3, the conductor 10 being laced between the front and back plates 0 the door. The door 3 is of the usual double-wall construction, the spaces between the front and the rear wall being filled with heat-insulating material the thermostat The two contact terminals o 12. are thus eonne'cted to the insulated contact terminalsfi located in the hollow hinge pins 5 by means of effectively concealed and protected conductors.

A stationary contactstri 13 is mounted on, and suitably insiilate from, a. bent sheetmetal strip l l'which is, in turn, .suit ably secured, as by rivets, to a sheet-metal in operative position and also web 15 that is mounted in the body of the I oven 2. The beat form of the metal strip 14 rovides a certain amount of flexibility to t e mounting and may be so adjusted as to cause the contact strip 13 to be pressed against the contact head 7 and lhua insure goodeonlaet between the strip 13 lllNhtllL head TL The cont'aetstrip 13 is provided, at ils lower end. with a small projecting log 16 formed to receive one and of a conductor 17 which may he soldered in place. The other end of the conductor 1? connected to the tripping coil 18 of a circuit breaker I?) which controls the supply of energy from a cireuit 20 to a suitable, resistor 21 located in the, oven 2 and serving" toheat. the same. The coil 18, the circuit raaker l5) and the so )ply circuit illare shown seheaaitieally nu l), as they may be placed in any suitable location in the range 1. aml .suitahle conduciors J7 and 22 may be used to connect the Stiltlllllll) rontarl ships 13 to the sup ply circuit as shown in Fig: l.

A hinge cover nicnibcr 23 of substantially L-r-liape arm. as soelicls l'or lllrbingo pin being;- provided with a subatiuiially semi rylindrieal noleh "i-liu a .ide wall 25 of a raiscd portion :ZlL whirh railsed porlion Zll'lH as a housing or rover for the contact meehaoism. boss or lop 27 is aim provided to act as a stop for the door Ii when the same opened toils fullcst extent. The members i are suifabl secured to the body of the oven 2 by a 'p nralil'y ol' screws 28.

' will be noted that, by the use of (be derice einbodyhu my invention. it is possible to assemble llie door (annplele with the conrlnr'tors and the thermostat and lo test the. same without reference to [he reHl. of (he range The Stationary ronlarts l l may be mounllzd in the oi'en at the proper lime in the course ol asseml'ily and properly couneclLerl lo the combo-tom I? am :22. and Ibo coolant lvrniiuals: *l-l may br prolecleil agali'isl injor by lllOllHliHjJ the hinge vow-r member .2 in ils proper poe'ilion, ll' ||esired, the oven door 3 may not be moulded on theoren 2 al, lbe factory but may be shipped Separately and may be pla ed in ils of'n'u alireposition when tho range is in s talled-loni thorustomefig; premises. The craisl-riwlion of lilodevice is such llial Lia: V supply LlIY- euib'lf placing (he oven door in its o JclilllH' position. the doors may be mill to stamhird Size, air door may he applied lo any oven with lhe, assurance lhat it will [it ropi a-li' and Hail, the elerlrical rontarls and 'i-irr nits rill operate properly. I thus pro- -rid e a unitary door fill'llcllll't' whirh may be manula luri-il. li-s'led and shipped sepia rati-ly lllf'll may be easily" and quickly placed in operativeposilion on the ri'ingje, wlj irl is iulerclia'ngimbla and which, in easo o1" ur'ia ssil vof repair, niay'be easily and rpii kly replaced by a new door ivilhout lzhe assistance of sli'illad labor, and tho defective, 0|llmplilll llll" .rl'oor may be repaired at the .shop. a

1,374,568 r p i lerniinals to eompletean eleiitiric' eireuit'and Various modifications may he node in. the device without departing from thespirit and scope of my invention, and i-lesire, lhere l'ore that only such liinitati-onashall be placed thereon as are imposed by the 70. prior art or are sm-oilically set Forth in tho appended claims. 7 claim as my invention: i i Q I. In an eleclrically-heated up JalutllL-l, the combination with a chamber, a ringed door '75 fin-said chamber having hollow hinges, a thel'nioslat mounted oil-said dmn-,'an-eleetrie circuit and stationary rontaebterminals moulded adjacent to said chambar ol' iaeans' moonled in said hollow hinges for connecting said thern'i'ostat to said contact terminals by plaring on door in its operative position 2. In an L'lll'lLllt'illl'-llt!illl?(l apparatus, the combination with a chamber, a door, hollow hinge pins on said door, a thermostat mount ed on hilll'l door and eondueloraconnected to v#aid thermostat of terminal members con-- nerted to said conductors, said terminal members being mounled within said holloiv hinge pins, and insulated lherefrom and po; *90 operating ronlaet terminals mounted adjacenl to Said door.

3. In an elcetrically-heated apparatus, the" combination with a chamber, a' dooijhollow hinge pin: on said door, a thermostat mount-Y; "'35 ed on said door. and ((JllllllCtOlH eonneeleil to i said llll'llllliSllll ol' insulated terminal men'i hers ronnceled to said conduct rs and mount" edwithin said hollow binge pins and extend in; beyond the onler endslhcreolQ-and in; saluted l'Ullllll'l nu'lnlu-i's mounted adjacent. to said rliainla-r and engaging lhe project ingynds of said lerlninnl membersi,

I In an elc ll'ii'all \'l|vuliL'l| apparatusflhe 'Ulll llllillill wilb a chamber, a dooljQliollow bing pins on amid illflll'," therinostal mountd on lllll door. conductors connected losaid lhermoslaL ol insulaled lermiual 11ne1nhers' g rouner'led lo paid vondlu'lorsand |uounlte d wilhiu aaid hollow hinge pins and cal-nah ing'he yond lhe ouler ends l'hereo'l', insulated milllzu'll Im'lnbcis 'inounlvfdailjacenl lo Said rhamber and engaging (he projectingends of said terminal members.{andhingm. i| cover members mounted adjacent: toflsau chamla-r; i-m'iperaling witlr and 'corerin said hollow hinge pins, contact termina and eoulaet members. 5

a 5. In an eleclrirally-ln-aliiil apparaluo eombinalion with a chamber, a hinged anal: lHlYlllfl'llHllflW hinges on said rlnnriberJ lh-rmoslal; mounted .on said "diiorpa ilele li'ic circuit,"and"stationar guitar-t term mils mounted adjacent to said:elnnuheiif terminal inmnhors connected to 5a idl hernia): slut and mounted in said hollow Iii-u'gcSamd i-oi'i 'ierating with iaaidl stationary (Cunt t ll a (fllllllllnml hingeqihjlte un'r l-ieontael; cover member mountcil on said chamber;

6. The combination of a, chamber, a door therefor, a device carried b the door having electrical contact mem ers adapted to engage, under predetermined conditions,

5 hinge pins carried by the door, insulated conductors leading from the contact membeis through said hin ing at the ends tht 'o pins and terminatdetaclmbly mounted FRANK F. FORSH EE. 

